Physics

Problem

0.50\,\text{kg}

cart moves at

2.4\,\text{m/s}

on a horizontal, frictionless track and collides with a

0.30\,\text{kg}

block that is initially at rest. The cart and block stick together. Immediately afterward, the

0.80\,\text{kg}

composite object collides elastically with a second cart of mass

0.80\,\text{kg}

that is at rest. What is the speed of the second cart after the elastic collision? a)

0.90\,\text{m/s}

2.4\,\text{m/s}

1.5\,\text{m/s}

0.75\,\text{m/s}